Original insulation trade vintage catalog for MARATHON CHEMICAL COMPANY, was located in Rothschild, WI. Manufacturers of Lignolite laminated lignin plastic for electrical and mechanical applications. Superior arc resistance, high dielectric strength. Division of Marathon Paper Mills Company. Disbound from a large 1944 electrical construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library.